Lilly wrote:
I realize it may be a lot of work, but then I consider that kind of
stuff fun. Go figure. I'm sure that the rhodies that are already there
are damaging the trees roots. My idea was to replace the rhodies with
very small shallow plants.

Rhododendrons have very shallow roots. What kind of tree is it? How long
have these things been planted on this mound? FYI sometimes a mound is
called a berm.

--
Travis in Shoreline (just North of Seattle) Washington
USDA Zone 8b
Sunset Zone 5